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RECEIVED ?4'/j <br />AUG 16 2010 4r- S <br />Division of Reoo,,,aiion <br />. Mining and Safet <br />ENERGY FUELS RESOURCES <br />CORPORATION <br />August 6, 2010 RECEVED <br />Ms. Angelique Diaz, Ph.D. AUG 0 9 2010 <br />U.S. Environmental Protection Agency GRAND JUNG i 1UN FIELD OFFICE <br />1595 Wynkoop Street RECL???A DIVISION OF <br />Denver, CO 80202-1129 <br />Transmittal: Application for Approval of Construction <br />Whirlwind Mine, Mesa County, Colorado M _? coo 7 , d qq <br />Dear Angelique: <br />Attached are two copies of the above referenced application that Energy Fuels Resources <br />Corporation is submitting in compliance with 40 CFR Part 61, Subpart B for venting and <br />monitoring radon emissions at the Whirlwind Mine. <br />Although the mine straddles the Colorado and Utah state line, all emissions during the <br />initial phases of mining will occur in Colorado. We are copying the Utah Division of Air <br />Quality as a courtesy, as they have primacy for regulating radon emissions from mining <br />operations in Utah and we may ultimately need to convert one or more intake ventilation <br />shafts in Utah to exhaust shafts. We are also copying a number of other state and federal <br />agencies in an effort to keep all agencies informed. <br />The Whirlwind Mine is currently on standby; however, we are in discussions with <br />Denison Mines regarding a potential toll milling agreement with the White Mesa Mill in <br />Blanding, Utah. Of course, we ultimately hope to permit and construct our own mill in <br />Paradox Valley, which would also allow us to resume production at the Whirlwind Mine. <br />Sincere <br />Enclosures <br />ank Filas, P.E. <br />Environmental Manager <br />Cc: S. Antony, D. White, B. Norquist, Z. Rogers, J. Fulbright (Energy Fuels) <br />J. Morris, Utah Division of Air Quality <br />C. Pray, Colorado Air Pollution Control Division <br />S. Gerwe, Grand Junction Bureau of Land Management <br />R. Means, Colorado Division of Reclamation, Mining and Safety <br />:r?erznv l i?zis resources Corporation 'i-/Iil Union 'oulc-v-ard. Suite 600 <br />1_akc";ocd, -0 80128 11ione. 303-974.2 140